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Article

The 2nd to 4th digit ratio and autism.

Developmental medicine and child neurology - 1 Mar 2001

Manning J T, Baron-Cohen S, Wheelwright S, Sanders G

Abstract excerpt

It has been suggested that autism may arise as the result of exposure to high concentrations of prenatal testosterone. There is evidence that the ratio of the lengths of the 2nd and 4th digit (2D:4D) may be negatively correlated with prenatal testosterone. We measured 2D:4D in 95 families recruited via the National Autistic Society, UK. The sample comprised a total 72 children with autism (62 males, 10 females;...

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PMID: 11263685

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 5 Sept 2026. Manifest publication-graph-cohort-2026-09-05.1.

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